检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000
出 处:《中国沙漠》2004年第3期323-329,共7页Journal of Desert Research
基 金:国家科技部社会公益研究专项课题"西北干旱区沙尘暴预警;服务系统研究"(2001科技部类 08);国家重点基础研究发展规划项目(GT2000048705)资助
摘 要:选用中国178个常规气象观测站建站~2000年历年春季沙尘暴日数资料,分析了近50a来中国北方春季沙尘暴的气候特征。在此基础上进一步揭示了我国北方沙尘暴的形成、发展以及造成的危害。结果表明:我国北方春季沙尘暴存在东西反位相差异,近50a来,春季沙尘暴日数总体趋势在减少,但20世纪末又有明显的回升趋势。这不仅与影响我国北方的冷空气路径有关,还与青藏高原冬季地面感热的异常密切相关。Data of annual sand-dust storm days recorded by the 178 meteorology observation stations in northern China were used to analyze the climatic characteristics of sand-dust storm during spring in the recent 50 years and its response to the surface sensible heat on Qinghai-Xizang plateau in winter. Results showed that there was opposite phase of sand-dust storm happening between in the east and the west of northern China; generally the sand-dust storm days during spring had been decreasing in recent 50 years, but at the end of the 20th century remarkably showed re-rising trend. The happening of sand-dust storm in northern China not only has relation with the moving path of cold air but also with the surface sensible heat flux on Qinghai-Xizang plateau in winter.
分 类 号:P445.4[天文地球—大气科学及气象学]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.229